US PATENT SUBCLASS 505 / 853
.~ Oscillator: (Class 331)

Current as of: June, 1999
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505 /   HD   SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS

825  DF  APPARATUS, PER SE, DEVICE, PER SE, OR PROCESS OF MAKING OR OPERATING SAME {36}
853.~ Oscillator: (Class 331) {1}
854  DF  .~.~> With solid-state active element: (Class 331/107S)

DEFINITION

Classification: 505/853

Oscillator: (Class 331):

(under subclass 825) Subject matter including means for initiating and maintaining an electrical signal or an electromagnetic wave having a strictly periodic repetitious frequency.